Definition
Calling something 'unmanful' suggests it lacks the qualities typically associated with men, such as courage, strength, or decisiveness. It implies a deficiency in these traits, often carrying a negative connotation. Think of it as the opposite of being valiant or brave. An 'unmanful' act might be one of cowardice or weakness. It's similar to saying someone didn't 'step up' when they should have. It is the opposite of acting with boldness.